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NWS Special Weather Statement (Grayson County)

Forecast Last Updated at Sunday, August 25, 2019 at 3:30AM

Lingering Clouds & Cooler

Clouds stick around another day under cooler than usual temperatures. This is thanks to high pressure settling over the Northeastern U.S. and wedging south through the Mid-Atlantic and into the Carolinas as it nudges up against the eastern slopes of the Appalachians. Spotty light rain or drizzle remains possible today and Monday. The wedge breaks down Tuesday as a warm front brings up our temperatures a few degrees with widely scattered showers and possibly thundershowers. A cold front sweeps in Wednesday with more scattered showers and thunderstorms. Nicer weather is in store for the end of the workweek and into the weekend.

Things are beginning to brew in typical late August fashion in the tropics. See the details in the Forecast Discussion.


Hi: 73 Lo: 57

Mostly cloudy; Isolated shower possible; Remains pleasantly cool for late August; East 5-10 mph

Hi: 73 Lo: 60

Mostly cloudy; Stays on the cool side; Can't rule out a stray shower or two, better chance of rain Mon. night; NE wind 5-10 mph, becoming SE by afternoon

Hi: 75 Lo: 63

Mostly cloudy; Widely scattered showers, maybe a thundershower; South wind 5-10 mph

Hi: 80 Lo: 63

Mostly cloudy; Bit warmer; Scattered showers & thundershowers

Hi: 80 Lo: 59

Patchy AM fog; Partly cloudy; Pleasant

Further Out

Friday - Partly cloudy; Pleasant; High in the lower 80s; Low in the lower 60s
Saturday - Mostly cloudy; Isolated PM showers possible; Warmer; High in the lower 80s; Low in the lower 60s

Forecast Discussion

High pressure has settled over the Northeastern U.S. and extends south through the Mid-Atlantic and into the Carolinas. Meanwhile, a stationary front lingers in place from Georgia and the deep south into the Lower Mississippi Valley. Moisture continues to lift over our wedge of high pressure as it is nudged against the eastern slopes of the Appalachians. The result is extensive cloud cover with spotty light rain or drizzle into Tuesday. Not to mention the subdued temperatures.

Our wedge begins to break down Tuesday as a warm front lifts across the Tennessee Valley into our neck of the woods. Clouds linger but we'll notice a bump up in temperatures, in addition to widely scattered showers and possibly some thunderstorms too.

A cold front moves through the Midwest into the Ohio Valley Wednesday behind the warm front. This will produce more scattered showers and thunderstorms. High pressure builds into region behind the cold front Thursday setting the stage for pleasant weather. Patchy fog is a good bet both Thursday and Friday mornings, however, the rest of the daytime should be pleasant and dry.

A rather dry cold front moves into the Ohio Valley Saturday and brings more cloud coverage with the chance for a some PM shower activity.

A tropical disturbance lingers off the east coast of Florida and moves north and east through Wednesday. Meanwhile, Tropical Storm Dorian has developed east of Barbados. At current standing, Dorian is expected to become a hurricane by Tuesday and impact Puerto Rico and the Dominican Republic Wednesday to Thursday. All eyes will be on Dorian through the week as the forecast cone zeros in beyond the Bahamas. The system is still quite a ways out, so there is a good bit of uncertainty in the forecast beyond 5 days.


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